In a mixing bowl, combine the rolled oats, pumpkin puree, milk, maple syrup, cinnamon, nutmeg, and vanilla extract. Stir thoroughly until all ingredients are well incorporated and the mixture is smooth without lumps.
Seal the bowl with a lid or plastic wrap and place it in the refrigerator overnight, allowing the oats to absorb the flavors and soften until thick and tender.
The next morning, remove the oats from the refrigerator and give the mixture a quick stir. The oats should be plump and creamy, with a fragrant aroma of warm spices filling the air.
Scoop the soaked oats into serving bowls, garnishing with toppings like chopped nuts, a drizzle of honey, or fresh fruit if desired.
Enjoy your cozy, nutritious breakfast, savoring the creamy texture and festive flavors with each spoonful.
